Messages in secret language

Sometimes you want to get a notification on your PC that you want to keep secret from others.

I always send those kinds of secret messages to me via Morse code (as sound). I know morse but people around me don't.
So that's how I can hear special messages in intelligible Morse code.

It works particularly well when I share my screen during a Teams meeting. I hear the notification but the other participants do not.

The tool is: cw (installable with sudo install cw).

Example of usage in a script:

echo "hello" | cw -w 18 -e

The number after -w is the speed in words per minute.